Elastic TPU Polishing Composite Membrane and Polishing Tool therewith and Manufacture Method thereof

ABSTRACT

An elastic TPU polishing composite membrane includes a TPU adhesive film layer, an abrasive layer and a lubricant anti-static coating layer, wherein the TPU adhesive film layer is overlappedly adhered to one surface of the abrasive layer and the lubricant anti-static coating layer is evenly coated on other surface of the abrasive layer.

NOTICE OF COPYRIGHT

A portion of the disclosure of this patent document contains material which is subject to copyright protection. The copyright owner has no objection to any reproduction by anyone of the patent disclosure, as it appears in the United States Patent and Trademark Office patent files or records, but otherwise reserves all copyright rights whatsoever.

BACKGROUND OF THE PRESENT INVENTION Field of Invention

The present invention relates to a polishing composite membrane, and more particularly to an elastic TPU polishing composite membrane and a polishing tool with the elastic TPU polishing composite membrane.

Description of Related Arts

In order to finish an outer or inner surface of the workpiece, a sanding and polishing tool is commonly used for sanding and polishing the surface of the workpiece. For those tools, polishing composite membranes are essential. Those tools may also be used for partially sanding the surface of the workpiece depended on the application thereof. In the areas of automobile manufacturing and repair of cars, precision sanding and polishing of 3C electronic industry, the sanding and polishing tools are commonly used. The sanding and polishing tools are commonly provided for manually finishing the surface of the workpiece so as to increase the quality thereof. Due to the flexibility and simplicity of operating the hand sanding or abrading tool, such as the sandpaper or conventional files having variety of cuts or tooth configurations, it is widely applied for finishing or rubbing the workpiece. Although those conventional sanding and polishing tools are suitable for a number of applications and no matter those devices are used manually or automatically, the conventional sanding and polishing tools for finishing the surface of workpiece manually or automatically are still suffering from many disadvantages, such as poor properties of tension, elasticity and so on. On the other hand, as some conventional sanding and polishing tools are capable of absorbing liquid, however, the liquid are easily and quickly released from the interior of the conventional sanding and polishing tools. As a result, users have to make the conventional sanding and polishing tools to absorb liquid again in a very short time resulting in a low efficiency. In addition, some conventional sanding and polishing tools are easy to be worn and have a short life span resulting in an increased cost.

Particularly, for some products which have a high surface precision requirement, the surfaces of these products must be polished with a higher standard. However, in the process of actual polishing processing, the existing conventional polishing composite membranes coated on the conventional sanding and polishing tools cannot apply to the products with irregular shape or surfaces.

SUMMARY OF THE PRESENT INVENTION

The invention is advantageous in that it provides an elastic TPU polishing composite membrane and a polishing tool therewith, wherein the elastic TPU polishing composite membrane not only has toughness, wear resistance, cold resistance, and good environmental protection non-toxic properties, but also has the functions of polishing and grinding.

Another advantage of the invention is to provide an elastic TPU polishing composite membrane and a polishing tool therewith, wherein a TPU adhesive film layer of the elastic TPU polishing composite membrane is combined with an abrasive layer made of polished abrasive material to form a composite material which combined the excellent properties of the TPU adhesive film layer and the abrasive layer, thereby the elastic TPU polishing composite membrane having excellent grinding and polishing performances.

Another advantage of the invention is to provide an elastic TPU polishing composite membrane and a polishing tool therewith, wherein a lubricant anti-static coating layer of the elastic TPU polishing composite membrane has excellent anti-clogging and lubrication function, so that the life span of the elastic TPU polishing composite membrane is extended, thereby the quality of polished surface is improved and the scratch thereon is reduced.

Another advantage of the invention is to provide an elastic TPU polishing composite membrane and a polishing tool therewith, wherein the elastic TPU polishing composite membrane and a polishing tool therewith can be made into different shapes and sizes according to different requirements.

Another advantage of the invention is to provide an elastic TPU polishing composite membrane and a polishing tool therewith, wherein the elastic TPU polishing composite membrane and the polishing tool therewith are durable and economical for users.

Another advantage of the invention is to provide an elastic TPU polishing composite membrane and a polishing tool therewith, wherein the elastic TPU polishing composite membrane and the polishing tool therewith can effectively polish the surface of the workpiece such as electronic products with irregular figures.

Another advantage of the invention is to provide an elastic TPU polishing composite membrane and a polishing tool therewith, wherein the TPU adhesive film layer is firmly adhered to the surface of the abrasive layer by a modified adhesive.

Additional advantages and features of the invention will become apparent from the description which follows, and may be realized by means of the instrumentalities and combinations particular point out in the appended claims.

According to the present invention, the foregoing and other objects and advantages are attained by an elastic TPU polishing composite membrane, comprising:

an abrasive layer:

a TPU adhesive film layer overlappedly adhered to one surface of the abrasive layer; and

a lubricant anti-static coating layer evenly coated on other surface of the abrasive layer.

According to the present invention, the foregoing and other objects and advantages are also attained by a polishing tool, comprising an elastic TPU polishing composite membrane and a polishing tool main body combined with the elastic TPU polishing composite membrane, wherein the elastic TPU polishing composite membrane comprises:

an abrasive layer;

a TPU adhesive film layer overlappedly adhered to one surface of the abrasive layer; and

a lubricant anti-static coating layer evenly coated on other surface of the abrasive layer, wherein the TPU adhesive film layer is affixed to the TPU adhesive film layer of the elastic TPU polishing composite membrane.

According to the present invention, the foregoing and other objects and advantages are also attained by a manufacture method of an elastic TPU polishing composite membrane, comprising the steps of:

overlappedly adhering a TPU adhesive film layer to one surface of an abrasive layer by a modified adhesive; and

evenly coating a lubricant anti-static coating layer on other surface of the abrasive layer so as to form the elastic TPU polishing composite membrane.

Still further objects and advantages will become apparent from a consideration of the ensuing description and drawings.

These and other objectives, features, and advantages of the present invention will become apparent from the following detailed description, the accompanying drawings, and the appended claims.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a perspective view of an elastic TPU polishing composite membrane according to a preferred embodiment of the present invention.

FIG. 2 is a perspective view of the elastic TPU polishing composite membrane according to the above preferred embodiment of the present invention.

FIG. 3 illustrates the components and the weight ratio of a modified adhesive of the elastic TPU polishing composite membrane.

FIG. 4 illustrates the components and the weight ratio of a lubricant anti-static coating layer of the elastic TPU polishing composite membrane.

FIG. 5 is a perspective view of a polishing tool with the elastic TPU polishing composite membrane according to a preferred embodiment of the present invention.

FIG. 6 is a perspective view of a polishing tool with the elastic TPU polishing composite membrane according to another preferred embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

The following description is disclosed to enable any person skilled in the art to make and use the present invention. Preferred embodiments are provided in the following description only as examples and modifications will be apparent to those skilled in the art. The general principles defined in the following description would be applied to other embodiments, alternatives, modifications, equivalents, and applications without departing from the spirit and scope of the present invention.

Referring to FIG. 1 to FIG. 5 of the drawings, an elastic TPU polishing composite membrane 100 and a polishing tool 1000 with the elastic TPU polishing composite membrane 100 according to a preferred embodiment of the present invention are illustrated, wherein the elastic TPU polishing composite membrane 100 comprises a TPU adhesive film layer 10, an abrasive layer 20 and a lubricant anti-static coating layer 30. The abrasive layer 20 is overlappedly connected with the TPU adhesive film layer 10 and is overlapped with the TPU adhesive film layer 10. The lubricant anti-static coating layer 30 is evenly coated on the surface of the abrasive layer 20. The abrasive layer 20 is made of polished abrasive material to polish the surface of the workpiece such as electronic products.

Specifically, as shown in FIG. 1 of the drawings, the TPU adhesive film layer 10 is overlapped on the top surface of the abrasive layer 20 and the lubricant anti-static coating layer 30 is coated on the bottom surface of the abrasive layer 20. More specifically, as shown in FIG. 2 of the drawings, the TPU adhesive film layer 10 further comprises a modified adhesive 40 between the TPU adhesive film layer 10 and the abrasive layer 20. In other words, the TPU adhesive film layer 10 is adhered to the top surface of the abrasive layer 20 by the modified adhesive 40.

More specifically, as shown in FIG. 3 of the drawings, the compositions of manufacturing the modified adhesive 40 include a urethane resin 41, a curing agent 42 and a flatting agent 43. According to the preferred embodiment of the invention, a basic proportion of the urethane resin 41, the curing agent 42 and the flatting agent 43 by weight is 100:10˜20:0.5˜1.5. Preferably, the preferably proportion of the urethane resin 41, the curing agent 42 and the flatting agent 43 by weight is 100:15:1. The modified adhesive 40 is firmly adhered the abrasive layer 20 to the TPU adhesive film layer 10 and enhances the adhesive force between the abrasive layer 20 and the TPU adhesive film layer 10. One skilled in the art will understand that the proportion of compositions of manufacturing the modified adhesive 40 of the embodiments of the present invention described above is exemplary only and not intended to be limiting.

More specifically, as shown in FIG. 4 of the drawings, the compositions of manufacturing the lubricant anti-static coating layer 30 are a lubricant solution paraffin 31, a film-forming agent 32 and an antistatic agent 33. According to the preferred embodiment of the invention, a basic proportion of the lubricant solution paraffin 31, the film-forming agent 32 and the antistatic agent 33 by weight is 100:8˜12:5˜8. Preferably, the preferably proportion of the lubricant solution paraffin 31, the film-forming agent 32 and the antistatic agent 33 by weight is 100:10:6.5. One skilled in the art will understand that the proportion of compositions of manufacturing the lubricant anti-static coating layer 30 of the embodiments of the present invention described above is exemplary only and not intended to be limiting.

It is worth mentioning that the TPU adhesive film layer 10 of the elastic TPU polishing composite membrane 100 is made of elastic material having toughness, wear resistance, cold resistance, and good environmental protection non-toxic properties.

It is worth mentioning that the TPU adhesive film layer 10 of the elastic TPU polishing composite membrane 100 is combined with the abrasive layer 20 made of polished abrasive material so as to form a composite material which combined the excellent properties of the TPU adhesive film layer 10 and the abrasive layer 20. Thereby, the elastic TPU polishing composite membrane 100 having excellent grinding and polishing performances.

Moreover, it is worth mentioning that as the abrasive layer 20 is adhered with the TPU adhesive film layer 10 by the modified adhesive 40, the TPU adhesive film layer 10 not only has toughness, wear resistance, cold resistance, and good environmental protection non-toxic properties, but also has the functions of polishing and grinding, so that the elastic TPU polishing composite membrane 100 is flexible grinding tool having soft, excellent tensile and elastic properties.

It is worth mentioning that the lubricant anti-static coating layer 30 evenly coated on the abrasive layer 20 has excellent anti-clogging and lubrication function, so that the life span of the elastic TPU polishing composite membrane 100 is extended, thereby the quality of polished surface is improved and the scratch thereon is reduced.

As shown in FIG. 5 of the drawings, the polishing tool 1000 with the elastic TPU polishing composite membrane 100 further comprises a polishing tool main body 200 connected with the elastic TPU polishing composite membrane 100. The polishing tool main body 200 is affixed to the TPU adhesive film layer 10 of the elastic TPU polishing composite membrane 100. The polishing tool main body 200 is made of sponge material and the polishing tool 1000 with the elastic TPU polishing composite membrane 100 is implemented as an elastic polishing sponge tool.

It is worth mentioning that the polishing tool 1000 with the elastic TPU polishing composite membrane 100 is cut and made into different shapes and sizes according to different requirements. For example, the polishing tool 1000 with the elastic TPU polishing composite membrane 100 can be square, disc-shaped and so on. Users can hold the polishing tool 1000 in a manner of palms closely contacting the elastic TPU polishing composite membrane 100 to polish the surface of the workpiece, such as electronic products with irregular figures using the elastic TPU polishing composite membrane 100. The peripheral side portions of the polishing tool main body 200 of the polishing tool 1000 are also manufactured into a shape which conform to the human engineering in such a manner that the comfortable sensation of users during operating process is enhanced and the polishing tool 1000 is not easy to be slipped off. It is worth mentioning that the polishing tool 1000 is not only used for manually polishing the surface of the workpiece, but also can be assembled with automatic devices to achieve automatically sanding and polishing performance according to other embodiments of the present invention. For example, in some embodiments of the present invention, the polishing tool 1000 is assembled with a driving member such as a motor and the elastic TPU polishing composite membrane 100 of the polishing tool 1000 is faced outwardly for polishing the surface of the workpiece automatically. One skilled in the art will understand that the shapes and operation manners of the polishing tool 1000 with the elastic TPU polishing composite membrane 100 of the embodiments of the present invention described above are exemplary only and not intended to be limiting.

As shown in FIG. 6 of the drawings, a polishing tool 1000A with the elastic TPU polishing composite membrane 100 is illustrated. The polishing tool 1000A with the elastic TPU polishing composite membrane 100 further comprises a polishing tool main body 200A connected with the elastic TPU polishing composite membrane 100. The polishing tool main body 200A is affixed to the TPU adhesive film layer 10 of the elastic TPU polishing composite membrane 100. The polishing tool main body 200A is made of flexible plastic material and the polishing tool 1000A with the elastic TPU polishing composite membrane 100 is implemented as an elastic polishing plastics tool.

One skilled in the art will understand that the polishing tool main body 200 and 200A of the embodiment of the present invention as shown in the drawings and described above are exemplary only and not intended to be limiting. In other words, the elastic TPU polishing composite membrane 100 can be implemented as other shaped structure and be combined with other polishing tool main body 200 with different materials so as to adapt for polishing and grinding various products.

According to the embodiments of the present invention, a method of manufacturing the elastic TPU polishing composite membrane 100 is also provided, wherein the manufacturing method of the elastic TPU polishing composite membrane 100 comprises the following steps.

(a) overlappedly adhering the TPU adhesive film layer 10 to one surface of the abrasive layer 20 by the modified adhesive 40; and

(b) evenly coating the lubricant anti-static coating layer 30 on other surface of the abrasive layer 20 so as to form the elastic TPU polishing composite membrane 100.

It is worth mentioning that the manufacturing method of the elastic TPU polishing composite membrane 100 further comprises the following steps.

(i) Provide the urethane resin 41, the curing agent 42 and the flatting agent 43 to form the modified adhesive 40.

(ii) Provide the lubricant solution paraffin 31, the film-forming agent 32 and the antistatic agent 33 to form the lubricant anti-static coating layer 30.

It is worth mentioning that in the step (i), a basic proportion of the urethane resin 41, the curing agent 42 and the flatting agent 43 by weight is 100:10˜20:0.5˜1.5.

Preferably, in the step (i), a preferable proportion of the urethane resin 41, the curing agent 42 and the flatting agent 43 by weight is 100:15:1.

It is worth mentioning that in the step (ii), a basic proportion of the lubricant solution paraffin 31, the film-forming agent 32 and the antistatic agent 33 is 100:8˜12:5˜8.

It is worth mentioning that in the step (ii), a preferable proportion of the lubricant solution paraffin 31, the film-forming agent 32 and the antistatic agent 33 is 100:10:6.5.

One skilled in the art will understand that the embodiment of the present invention as shown in the drawings and described above is exemplary only and not intended to be limiting.

It will thus be seen that the objects of the present invention have been fully and effectively accomplished. The embodiments have been shown and described for the purposes of illustrating the functional and structural principles of the present invention and is subject to change without departure from such principles. Therefore, this invention includes all modifications encompassed within the spirit and scope of the following claims. 

What is claimed is:
 1. An elastic TPU polishing composite membrane, comprising: an abrasive layer; a TPU adhesive film layer overlappedly adhered to one surface of said abrasive layer; and a lubricant anti-static coating layer evenly coated on other surface of said abrasive layer.
 2. The elastic TPU polishing composite membrane, as recited in claim 1, wherein said TPU adhesive film layer is overlappedly adhered to said abrasive layer by a modified adhesive.
 3. The elastic TPU polishing composite membrane, as recited in claim 2, wherein compositions of manufacturing said modified adhesive include a urethane resin, a curing agent and a flatting agent.
 4. The elastic TPU polishing composite membrane, as recited in claim 3, wherein a basic proportion of said urethane resin, said curing agent and said flatting agent by weight is 100:10˜20:0.5˜1.5.
 5. The elastic TPU polishing composite membrane, as recited in claim 3, wherein a proportion of said urethane resin, said curing agent and said flatting agent by weight is 100:15:1.
 6. The elastic TPU polishing composite membrane, as recited in claim 1, wherein compositions of manufacturing said lubricant anti-static coating layer include a lubricant solution paraffin, a film-forming agent and an antistatic agent.
 7. The elastic TPU polishing composite membrane, as recited in claim 6, wherein a basic proportion of said lubricant solution paraffin, said film-forming agent and said antistatic agent is 100:8˜12:5˜8.
 8. The elastic TPU polishing composite membrane, as recited in claim 6, wherein a proportion of said lubricant solution paraffin, said film-forming agent and said antistatic agent is 100:10:6.5.
 9. A polishing tool, comprising an elastic TPU polishing composite membrane and a polishing tool main body combined with said elastic TPU polishing composite membrane, wherein said elastic TPU polishing composite membrane comprises an abrasive layer, a TPU adhesive film layer overlappedly adhered to one surface of said abrasive layer, and a lubricant anti-static coating layer, which is evenly coated on other surface of said abrasive layer, wherein said TPU adhesive film layer is affixed to said TPU adhesive film layer of said elastic TPU polishing composite membrane.
 10. The polishing tool, as recited in claim 9, wherein said TPU adhesive film layer is overlappedly adhered to said abrasive layer by a modified adhesive.
 11. The polishing tool, as recited in claim 10, wherein compositions of manufacturing said modified adhesive include a urethane resin, a curing agent and a flatting agent.
 12. The polishing tool, as recited in claim 11, wherein a basic proportion of said urethane resin, said curing agent and said flatting agent by weight is 100:10˜20:0.5˜1.5.
 13. The polishing tool, as recited in claim 11, wherein a proportion of said urethane resin, said curing agent and said flatting agent by weight is 100:15:1.
 14. The polishing tool, as recited in claim 9, wherein compositions of manufacturing said lubricant anti-static coating layer include a lubricant solution paraffin, a film-forming agent and an antistatic agent.
 15. The polishing tool, as recited in claim 14, wherein a basic proportion of said lubricant solution paraffin, said film-forming agent and said antistatic agent is 100:8˜12:5˜8.
 16. The polishing tool, as recited in claim 14, wherein a proportion of said lubricant solution paraffin, said film-forming agent and said antistatic agent is 100:10:6.5.
 17. A manufacture method of an elastic TPU polishing composite membrane, comprising the steps of: overlappedly adhering a TPU adhesive film layer to one surface of an abrasive layer by a modified adhesive; and evenly coating a lubricant anti-static coating layer on other surface of the abrasive layer so as to form the elastic TPU polishing composite membrane.
 18. The manufacture method, as recited in claim 17, further comprising a step of providing a urethane resin, a curing agent and a flatting agent to form the modified adhesive.
 19. The manufacture method, as recited in claim 18, wherein a basic proportion of the urethane resin, the curing agent and the flatting agent by weight is 100:10˜20:0.5˜1.5.
 20. The manufacture method, as recited in claim 18, wherein a proportion of the urethane resin, the curing agent and the flatting agent by weight is 100:15:1.
 21. The manufacture method, as recited in claim 17, further comprising a step of: providing a lubricant solution paraffin, a film-forming agent and an antistatic agent to form the lubricant anti-static coating layer.
 22. The manufacture method, as recited in claim 21, wherein a basic proportion of the lubricant solution paraffin, the film-forming agent and the antistatic agent is 100:8˜12:5˜8.
 23. The manufacture method, as recited in claim 21, wherein a proportion of the lubricant solution paraffin, the film-forming agent and the antistatic agent is 100:10:6.5. 